VOTE LEAVE VICTORY! Official figures reveal UK billed MORE than £350m each week by EU

The thinktank said it would be “very difficult, if not impossible” for the UK to change its permanent residency criteria.

SMF director Emran Mian said: “Our analysis suggests that, while the majority have or will acquire permanent residence, the right to remain in the UK of almost 600,000 people may be at risk if the UK leaves the EU in 2019.”